| Parameter | Specification |
|---|---|
| Model | GNR81 Starter Motor |
| Voltage | 24V DC |
| Power | 3.5kW |
| Internal Resistance | 15mΩ |
| Stator Outer Diameter | φ81mm |
| Weight | 5kg |
| Operating Temperature Range | -40°C to +125°C |
| Type | Electromagnetic Planetary Gear Reduction Starter |
| Switch Type | Integrated Electromagnetic Switch (Anti-welding) |
| Switch Protection | Ventilation Membrane (Anti-icing) |
| Service Life | Up to 50,000 start cycles |
| Materials | Flame-retardant housing and wiring |
| Design | Compact, space-saving structure |
| Manufacturer | Dowway Vehicle (China) |
| Customization Services | Voltage adjustment, torque tuning, mounting interface, CAN integration |
| R&D Capabilities | In-house mechanical design, thermal simulation, durability testing |
GNR81 Starter Motor—a robust, reliable, and compact solution designed for heavy-duty vehicles, commercial trucks, off-road equipment, and hybrid power systems.
Engineered for extreme environments, the GNR81 features a 24V DC operation, 3.5kW power output, and 15mΩ internal resistance, delivering powerful cranking performance under demanding conditions. With a stator outer diameter of φ81mm and weight of only 5kg, it offers an excellent balance between strength and compactness—ideal for space-constrained applications.
The GNR81 Starter Motor is a high-performance, high-reliability electric starter designed specifically for use in medium- and heavy-duty commercial vehicles, including trucks, buses, construction equipment, and off-road machinery. It operates on a 24V DC power supply with a rated power of 3.5kW and a resistance of 15mΩ, providing strong cranking torque even under cold-start conditions. The motor weighs 5kg and features a compact, space-saving design that allows for easy integration into tight engine compartments.
This starter employs an electromagnetic planetary gear reduction system, which offers high efficiency, smooth operation, and long service life. The integrated solenoid switch ensures reliable engagement and disengagement of the pinion gear with the flywheel ring gear. A key innovation is the anti-sticking design—the switch incorporates a breathable membrane structure that prevents contact point freezing in cold environments, ensuring consistent performance even at -40°C. Additionally, the overall electromagnetic switch design minimizes contact welding and improves durability over time.
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